Abstract
Aluminum AD0-based cast aluminum composite materials that are reinforced with carbon nanotubes and aluminum oxide nanofibers are obtained. The additives of 0.5 wt % single-walled carbon nanotubes (SWCNTs) and aluminum oxide nanofibers (AONFs) are shown to allow increasing the ultimate strength of cast metal by 15 and 16%, respectively. The hardening of the metal is preserved after cold deformation and annealing. Aluminum AD0 with SWCNTs or AONFs additives does not lose high strength after annealing, while aluminum with no additives is significantly weakened. This allows obtaining annealed aluminum wire with a tensile strength of 54–69% and a yield strength of 53–78% higher than those of metal with no additives. The effect of SWCNTs and AONFs for the grain size of aluminum AD0 in the cast state, after cold deformation, and annealing is studied. Nanoadditives were found to restrain the growth of metal grains at the stage of collective recrystallization and also affect the primary recrystallization of aluminum.
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Alekseev, A.V., Strekalov, V.V., Khasin, A.A. et al. Effect of Additives of Carbon Nanotubes and Oxide Nanofibers on the Mechanical Properties of Aluminum AD0 after Thermomechanical Processing. Inorg. Mater. Appl. Res. 12, 1302–1309 (2021). https://doi.org/10.1134/S2075113321050026
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DOI: https://doi.org/10.1134/S2075113321050026